<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script type="text/javascript" src="../js/vue.js"></script>
</head>

<body>
    <div id="root">
        <h1>今天天气很{{info}}</h1>
        <button @click="changeWeather()">切换天气</button>
    </div>
    <script type="text/javascript">
        new Vue({
            el: '#root',
            data() {
                return {
                    isHot: true
                }
            },
            methods: {
                changeWeather() {
                    this.isHot = !this.isHot
                }
            },
            computed: {
                info() {
                    return this.isHot ? '炎热' : '凉爽'
                }
            }
        })
    </script>
</body>

</html>